import uuid
import datetime
from io import BytesIO

from django.shortcuts import render, HttpResponse, redirect
from web.forms.account import RegisterModelForm, SendSmsForm, LoginSmsForm, LoginForm
from django.http import JsonResponse
from django.db.models import Q
from web import models

from utils.image_code import check_code


def register(request):
    '''注册'''
    if request.method == 'GET':
        form = RegisterModelForm()
        return render(request, "register.html", {'form': form})
    form = RegisterModelForm(data=request.POST)
    if form.is_valid():
        # 注册成功，写入数据库(密码密文)
        instance = form.save()
        # policy_object = models.PricePolicy.objects.filter(category=1, title='个人免费版').first()
        #
        # # 创建交易记录
        policy_object = models.PricePolicy.objects.filter(category=1, title='个人免费版').first()
        models.Transaction.objects.create(
            status=2,
            order=str(uuid.uuid4()),
            user=instance,
            price_policy=policy_object,
            count=0,
            price=0,
            start_datetime=datetime.datetime.now()
        )
        return JsonResponse({'status': True, 'data': '/login/'})

        # 注册失败
    return JsonResponse({'status': False, 'error': form.errors})


def send_sms(request):
    '''发送短信'''
    form = SendSmsForm(request, data=request.GET)
    if form.is_valid():
        return JsonResponse({'status': True})
    return JsonResponse({'status': False, 'error': form.errors})


def login_sms(request):
    '''短信登录'''
    if request.method == 'GET':
        form = LoginSmsForm()
        return render(request, 'login_sms.html', {'form': form})
    form = LoginSmsForm(request.POST)
    if form.is_valid():
        # 用户名输入正确， 登录成功
        mobile_phone = form.cleaned_data['mobile_phone']

        # 把用户名写入session中
        user_object = models.UserInfo.objects.filter(mobile_phone=mobile_phone).first()
        request.session['user_id'] = user_object.id
        request.session.set_expiry(60 * 60 * 24 * 14)

        return JsonResponse({'status': True, 'data': '/index/'})

    return JsonResponse({'status': False, 'error': form.errors})


def login(request):
    '''用户名和密码登录'''
    if request.method == 'GET':
        form = LoginForm(request)
        return render(request, 'login.html', {'form': form})
    form = LoginForm(request, data=request.POST)
    if form.is_valid():
        '''登录成功'''
        username = form.cleaned_data['username']
        password = form.cleaned_data['password']
        # user_object = models.User.objects.filter(username=username, password=passwd).first()
        user_object = models.UserInfo.objects.filter(Q(email=username) | Q(mobile_phone=username)).filter(
            password=password).first()
        if user_object:
            request.session['user_id'] = user_object.id
            request.session.set_expiry(60 * 60 * 24 * 14)
            return redirect('index')
        form.add_error('username', '用户名或密码错误')
    # 在用户名和密码输错的情况下不会显示错误信息，以后整改

    return render(request, 'login.html', {'form': form})


def image_code(request):
    '''生成图片验证码'''
    from io import BytesIO
    from utils.image_code import check_code

    image_object, code = check_code()

    request.session['image_code'] = code
    request.session.set_expiry(60)  # 修改session的过期时间为60秒
    stream = BytesIO()
    image_object.save(stream, 'png')

    return HttpResponse(stream.getvalue())


def logout(request):
    request.session.flush()
    return redirect('index')
